"We are delighted to announced that a 13-year-old missing child who we appealed for on Britain's Got Talent during the Missing People Choir's performance saw his appeal and called his mum," Choir co-founder Clare Cook explained.

"He is now home safe and well."

The choir is made up of families with missing loved ones, staff and volunteers from the charity Missing People and, during their performances, pictures of those missing were shown on the screen behind the choir.

Their performance in the final saw judge Amanda Holden in tears as she praised them for being "so touching [and] so moving". "I really don't know how you're all still standing, and standing so strong," she added.